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<html>

	<head>
		<meta charset="UTF-8">
		<title>卓讯科技前段</title>

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	<body>
		<script type="text/javascript">
			var x = 4;
			var y = 6;

			z = --x + y++ * x++;

			document.write(z)
		</script>
	</body>

</html>